Comparative electrolysis experiments were performed at platinum electrodes in the presence of some aqueous salt solutions at a concentration of 0.3 M and at the same imposed electrical potential,i.e.,-1500 mV/SCE.A characteristic coalescence behavior,which is called the"train of coalescence",was observed when ammonia gas was either electrogenerated from ammonium salt solutions or directly dissolved in the presence of some specific electrolytes.
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